[INFO] updating cached repository botev/symbolic_polynomials
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/botev/symbolic_polynomials
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/botev/symbolic_polynomials" "work/ex/beta-1.38-1/sources/1.37.0/gh/botev/symbolic_polynomials"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/botev/symbolic_polynomials'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/botev/symbolic_polynomials" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2148f5dfd91b331d608001068fb45db316727313
[INFO] sha for GitHub repo botev/symbolic_polynomials: 2148f5dfd91b331d608001068fb45db316727313
[INFO] validating manifest of botev/symbolic_polynomials on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of botev/symbolic_polynomials on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing botev/symbolic_polynomials
[INFO] finished frobbing botev/symbolic_polynomials
[INFO] frobbed toml for botev/symbolic_polynomials written to work/ex/beta-1.38-1/sources/1.37.0/gh/botev/symbolic_polynomials/Cargo.toml
[INFO] started frobbing botev/symbolic_polynomials
[INFO] finished frobbing botev/symbolic_polynomials
[INFO] frobbed toml for botev/symbolic_polynomials written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials/Cargo.toml
[INFO] crate botev/symbolic_polynomials already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/botev/symbolic_polynomials/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing botev/symbolic_polynomials against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 38e0bb7dd2d7c9d2d9f3ac78bd4b557077f53009122944c15ad4d9796ec27f6a
[INFO] running `"docker" "start" "-a" "38e0bb7dd2d7c9d2d9f3ac78bd4b557077f53009122944c15ad4d9796ec27f6a"`
[INFO] [stderr]    Compiling symbolic_polynomials v0.0.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `"docker" "inspect" "38e0bb7dd2d7c9d2d9f3ac78bd4b557077f53009122944c15ad4d9796ec27f6a"`
[INFO] running `"docker" "rm" "-f" "38e0bb7dd2d7c9d2d9f3ac78bd4b557077f53009122944c15ad4d9796ec27f6a"`
[INFO] [stdout] 38e0bb7dd2d7c9d2d9f3ac78bd4b557077f53009122944c15ad4d9796ec27f6a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8cf3127c595b56c5d2918a60e68ce7f472f43243ff903e7a49a128d2c622b4f7
[INFO] running `"docker" "start" "-a" "8cf3127c595b56c5d2918a60e68ce7f472f43243ff903e7a49a128d2c622b4f7"`
[INFO] [stderr]    Compiling symbolic_polynomials v0.0.2 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "8cf3127c595b56c5d2918a60e68ce7f472f43243ff903e7a49a128d2c622b4f7"`
[INFO] running `"docker" "rm" "-f" "8cf3127c595b56c5d2918a60e68ce7f472f43243ff903e7a49a128d2c622b4f7"`
[INFO] [stdout] 8cf3127c595b56c5d2918a60e68ce7f472f43243ff903e7a49a128d2c622b4f7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/botev/symbolic_polynomials:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b1123cea517be45d7ef990432525061841656a442fb1277db424bfc656c694fe
[INFO] running `"docker" "start" "-a" "b1123cea517be45d7ef990432525061841656a442fb1277db424bfc656c694fe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/symbolic_polynomials-17e6e79f32ad820e
[INFO] [stderr]      Running /opt/crater/target/debug/deps/example-7872ad63da00499c
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test example_test ... ok
[INFO] [stderr]    Doc-tests symbolic_polynomials
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 434) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 867) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 835) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 661) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 688) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 853) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 904) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 406) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymMonomial (line 918) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 1005) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 1022) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 475) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 1084) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 1098) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 516) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 943) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 548) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 768) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 729) ... ok
[INFO] [stdout] test src/lib.rs - &'a SymPolynomial (line 960) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 125) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 135) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 147) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 72) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 94) ... ok
[INFO] [stdout] test src/lib.rs - SymMonomial (line 83) ... ok
[INFO] [stdout] test src/lib.rs - SymPolynomial (line 323) ... ok
[INFO] [stdout] test src/lib.rs - SymPolynomial::simplify (line 255) ... ok
[INFO] [stdout] test src/lib.rs - SymPolynomial (line 307) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b1123cea517be45d7ef990432525061841656a442fb1277db424bfc656c694fe"`
[INFO] running `"docker" "rm" "-f" "b1123cea517be45d7ef990432525061841656a442fb1277db424bfc656c694fe"`
[INFO] [stdout] b1123cea517be45d7ef990432525061841656a442fb1277db424bfc656c694fe